Board Thread:General Discussion/@comment-27899087-20161017051407/@comment-27248965-20161017053659

The flying mechanism, or "Soaring" to be exact, is not ready yet, so HM Fly can only be used in battles. When Soaring is implemented later on (probably the following weekend according to Lando), we can use Fly outside of battles, and it works like Soaring in OR/AS and Pokemon Rangers: Guardian Signs.